JPH1119559A - Gradation reproduction type coating system, coating method using the system, and object to be coated - Google Patents

Abstract

[PROBLEMS] To provide a coating system capable of easily coating a high quality image having gradations or an image of multicolor printing on a surface of a substrate having an uneven shape using a roll coater. I will provide a. In a coating system including a roll coater, film original data is created by a film original creating device using original grayscale image data stored in an image database. Further, in the film original creation device 2, a plurality of divided original reproductions are created from the film original data by using the density gradation division method, and the plate material 21 is manufactured for each of these divided original reproductions. Then, the coating is repeated by the roll coater 8 using the plurality of printing materials 21 in sequence, and an image having a good image quality with gradation and a multicolor image is applied to the base material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gradation reproduction type coating system, a coating method using the coating system, and an object to be coated. More specifically, a grayscale original image with design properties is reproduced by the density gradation division method, and a halftone coating film with design properties or a multicolored coating film is applied with high precision, especially on a substrate having an uneven surface. The present invention relates to a coating system that can be easily coated, a coating method using the coating system, and an object to be coated.

[0002]

2. Description of the Related Art In general, wall materials having an uneven surface, exterior building materials, interior building materials, metal building materials, etc. (hereinafter referred to as "base materials") manufactured by ceramics, metal sizing (cold pressing), and the like. (Collectively referred to as "paints") is often coated with a coating material using a coating device such as a roll coater, a screen printing machine, or a spray coating machine. And among these coating equipment,
A spray coater is suitable for applying a uniform coating over the entire surface of a substrate, but is not suitable for applying a decorative coating to a part of the substrate surface. Further, the screen printing machine is suitable for applying a decorative coating to a part of the substrate surface, but is not suitable for applying a uniform coating over the entire surface of the substrate.

[0003] On the other hand, a roll coater can apply a uniform coating over the entire surface of a base material in the same manner as a spray coating machine if the circumferential surface of the transfer roll is smoothed. If a concavo-convex shape for imparting a design property is formed on the circumferential surface of the roll, a decorative coating film is applied to the base material surface in the same manner as a screen printing machine by the convex portion of the circumferential surface of the transfer roll. Therefore, it can be flexibly applied to both full-surface coating and decorative coating, and is widely used for coating a substrate having an uneven surface as described above.

When a base material is coated with a design by using such a roll coater, first, an uneven shape corresponding to the original image having the design is formed on the surface of the transfer roll. Then, a paint is applied to the surface of the transfer roll, and then the paint adhered to the protrusions on the surface of the transfer roll is transferred to the surface of the base material. Certain coatings are formed.

[0005]

In the coating using such a roll coater, the original image may be expressed in halftones by shading. However, in a conventional coating system using a roll coater, There is a problem that it is difficult to apply a halftone image corresponding to such an original image on a base material. That is, in general, when applying a halftone coating with shading to a substrate using one kind of paint, a method of expressing shading by the thickness of the coating film is used, for example. In other words, the dark portion makes the coating film thicker, and the lighter portion makes the coating film thinner to express halftones by shading. However, in the coating by the roll coater, the thickness of the paint adhered to the convex portion on the surface of the transfer roll is almost constant, and the thickness of the coating film transferred to the base material is also almost constant. For this reason, it is difficult for a roll coater to apply a halftone image to a substrate. Further, in a conventional coating system using a roll coater, there is a problem that it is difficult to apply multicolor printing to a substrate.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and uses a roll coater to form an image having good gradation and good image quality on the surface of a substrate having an uneven shape. An object of the present invention is to provide a coating system, a coating method, and an object to be coated, which can easily apply a multicolor image.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the tone reproduction type coating system according to the first aspect of the present invention comprises: (a) a design expressed in a continuous halftone by shading; A tone reproduction device that performs tone compression conversion of a gray-scale original image having a characteristic into a gradation-gradation stepwise divided image composed of a plurality of gradation-gradation regions represented by gradation gradations that vary stepwise; A) a divided reproduction original drawing creating apparatus that creates a divided reproduction original drawing expressing the shape of the density gradation area for each density gradation area of the gradation density stepwise divided image; A plate making apparatus for forming an uneven shape corresponding to the divided reproduction original on the surface of each transfer roll for each divided reproduction original, and (d) a plurality of grooves formed on the peripheral surface in a mesh form, The paint supplied from the supply source is raised by the groove While a mesh roll for holding a predetermined thickness on the peripheral surface is provided, a transfer roll is mounted, the transfer roll is brought into contact with the mesh roll, and the paint held on the peripheral surface of the mesh roll is coated on the circumferential surface of the transfer roll. And a roll coater for transferring the paint adhered to the circumferential surface to the base material. (E) The roll coater uses the same color paint different from each other for each transfer roll. It is characterized in that a coating film having a design property corresponding to a light and dark original image is formed on the substrate by repeatedly applying the coating on the substrate and separately applying the substrate (color gamut separation method). It is assumed that.

[0008] In this coating system (color gamut separation method), a grayscale original image expressed in a continuous halftone is composed of a plurality of density grayscale areas expressed in stepwise density grayscales. The gradation compression conversion is performed to the gradation gradation stepwise divided image, and a divided reproduction original drawing (second original drawing) and a transfer roll (plate material) are individually manufactured for each density gradation area. The substrate is repeatedly used to apply a coating having a gradation or a multicolor printing on the substrate. In this coating system, the individual coatings formed by the respective transfer rolls (plate materials) do not overlap on the substrate, and the substrate is separately applied by a plurality of paints. According to this coating system, it is possible to obtain a coated image having a desired gradation by changing the color tone of the paint used for each transfer roll when sequentially applying the coating using each transfer roll. Further, by changing the color of the paint used for each transfer roll, a multicolored paint image of a desired color can be obtained.

According to this coating system, the coating film formed on the base material by each transfer roll (plate material) is uniformly coated (solid coating, and if necessary, furthermore, a full-screen solid-coloring process such as a halftone dot). (It may be subjected to a binarization process), and since halftone dot decomposition has not been performed, highlight persistence, tone reproducibility (particularly tone reproducibility in the vicinity of highlight) or shading expression is excellent. Further, since dot resolution is not performed, a dot gain hardly occurs and a painted image with good image quality can be obtained. Note that if the number of gradation divisions is too small, the detail of the original grayscale image may be largely lost. Therefore, it is preferable that the number of gradation divisions is large to some extent (for example, the number of divisions is 3 or more). Thus, according to this coating system, it is possible to easily apply an image of good quality having gradations or an image of multicolor printing on the surface of the substrate having the uneven shape using the roll coater.

The gradation reproduction type coating system according to the second aspect of the present invention is characterized in that (a) a gradation original image having a design characteristic expressed in a continuous halftone by gradation is gradually changed. (B) a gradation reproduction device for performing gradation compression conversion to a gradation density stepwise divided image composed of n density gradation areas expressed by first to nth (n is an integer of 2 or more) density gradations; ) A gradation reproduction original image expressing the shape of the entire density gradation area of the gradation density stepwise divided image, and the first to (n-1) th density gradation areas are sequentially removed from each of the density gradation areas. A divided reproduction original drawing creating apparatus for creating a divided reproduction original drawing expressing (n-1) density gradation regions formed by
(C) For each divided reproduction original created by the divided reproduction original creation device, a plate-making apparatus for forming an uneven shape corresponding to the divided reproduction original on the surface of each transfer roll; A groove is formed in a mesh shape, and a mesh roll for holding a paint supplied from a paint supply source at a predetermined film thickness on the peripheral surface by the groove is provided, while a transfer roll is mounted, and the transfer roll is mesh rolled. And a roll coater for transferring the coating material held on the peripheral surface of the mesh roll to the circumferential surface of the transfer roll and transferring the coating material attached to the circumferential surface to the base material. e) A roll coater applies a paint of a predetermined color different for each transfer roll onto the same base material (coating method), and forms a coating film having a design property corresponding to the original grayscale image on the base material. Came to do And it is characterized in Rukoto. That is, in this coating system, for example, when expressing an intermediate gradation, the over-coating is performed such that the low density area includes the high density area.

In the coating system (coating method) according to the second embodiment, as in the case of the coating system (color gamut separation method) according to the first embodiment, unevenness is obtained by using a roll coater. On the surface of the base material having a shape, it is possible to easily apply an image having good gradation and good image quality or an image of multicolor printing. However, in the coating system according to the second aspect, a coating film is applied over the base material, and shades or colors are expressed by overlapping of the coating films. It is necessary to select colors and colors so that they are as intended. In the coating system (color gamut separation method) according to the first aspect, since the coating films do not overlap on the base material, a coating material having the intended density or color may be used simply. It should be noted that the coating system based on this recoating method has an advantage that even if the position of each plate material is shifted during coating on the base material, no plate shift occurs.

In each of the above coating systems, the paint remaining on the circumferential surface of the transfer roll after passing through the transfer position is disposed on the roll coater such that the outer circumferential surface thereof is pressed against the circumferential surface of the transfer roll. A cleaning roll that collects and cleans the circumferential surface, and a cleaning roll that contacts the circumferential surface of the transfer roll and cleans paint adhered to the concave portion of the circumferential surface of the transfer roll are provided. Is preferred.

In each of the above-mentioned coating systems, it is preferable that the transfer roll is constituted by a cylindrical hard shaft and a rubber plate wound around the shaft. In this case, for example, an uneven shape corresponding to the tone reproduction image can be formed on the surface of the plate material (rubber layer) by a treatment using ultraviolet light or a laser beam. In this case, the type of design to be coated on the base material can be freely switched by merely changing the plate material without replacing the transfer roll, and the coating operation can be performed more efficiently. The transfer roll may be a cylindrical body made of rubber or sponge. In this case, a sleeve made of glass-reinforced plastic or the like may be mounted on the shaft, and the above-mentioned structure may be mounted thereon. This makes it extremely easy to attach and detach the structure.

In each of the above coating systems, it is preferable that the roll coater uses a paint containing titanium oxide according to the design and a white base paint having a different extender pigment ratio. Coloring pigments (for example,
Red iron oxide, yellow iron oxide, carbon black, etc.). It is more preferable that the paint contains a flow control agent (for example, a thickener) or an aggregate. Furthermore, this paint is particularly preferably an emulsion paint. This is because such a coating material is particularly suitable for coating a substrate having an uneven shape on the surface, and can more easily and finely express a gradation.

According to a third aspect of the present invention, a dry film thickness of 10% is obtained by using any of the above coating systems.
A coating method characterized by coating a base material with a coating film having a design property of not less than μm. According to this coating method, it is possible to easily apply a good-quality image having gradation and a multicolor image to a surface of a substrate having an uneven shape by a roll coater. Further, according to a fourth aspect of the present invention, a coating film is applied on a substrate using any one of the above-described coating systems, and has a dry film thickness of 10 μm.
m or more substrates are provided.

The plate material of the transfer roll used in the present invention is:
For example, polymers of polymerizable monomers or chloroprene rubber, ethylene-chloroprene rubber, butyl rubber, silicone rubber, fluoro rubber, acrylic rubber, polysulfide rubber, natural rubber, butadiene rubber, isoprene rubber, foams of these rubbers or these It is formed of a material such as a reaction product of a rubber component and a photopolymerizable monomer.

When a polymer of a polymerizable monomer or a rubber, or a reaction product of a rubber foam or a rubber component and a polymerizable monomer is used as a material of a plate material of a transfer roll, the surface of the transfer roll can be designed and designed. Is easily formed by ultraviolet rays or a laser beam, and its durability is also improved. In particular, a composition comprising a rubber component and a photopolymerizable monomer is suitable for forming a concavo-convex shape that imparts a design property to a plate material by photopolymerization by irradiation with ultraviolet light.

[0018] The plate material having the concavo-convex shape imparting the design property is wound around a transfer roll prior to painting, for example. In addition, even when the circumference of the transfer roll is long, the plate material can be easily mounted or attached to the transfer roll. Therefore, a polymer or rubber of such a polymerizable monomer, or a reaction product of a rubber foam or a rubber component with a polymerizable monomer is very suitable for use as a material for a transfer roll plate material.

The substrate on which the coating film having a design is applied (transferred) by the roll coater according to the present invention may be any material as long as the material can transfer the paint by the roll coater. . Such base materials include, for example, those belonging to ceramics or metal sizing wall materials, building materials, etc., and inorganic plates such as gypsum plates, fiber cement plates, magnesium carbonate plates, calcium silicate plates, asbestos plates, or plywood, particles. Wooden boards such as boards and hard boards can be used. Further, a metal plate such as an aluminum plate and an iron plate, a plastic plate such as polypropylene and polyvinyl chloride, and further, a tile, a wallpaper, and the like can be given.
These substrates may have a smooth surface or an uneven surface. Further, the surface of these substrates may be subjected to an undercoat, a rust prevention treatment, an adhesion improving treatment, or the like.

The surface of the plate material (rubber layer) of the transfer roll used in the present invention has a surface hardness of JIS C 30 ° to A.
It is preferably formed of 80 ° rubber. When a transfer roll provided with a plate material having such a surface hardness is used, by pressing and arranging a cleaning roll on the transfer roll, the paint remaining on the transfer roll can be sufficiently squeezed out, and the paint can be efficiently used. It can be collected well on a cleaning roll. As described above, the remaining paint is efficiently collected, and as a result, the transfer roll receives the supply of the paint in a constant amount from the mesh roll, and transfers a coating film having a desired thickness with stable design. be able to.

The surface portion of the plate material of the transfer roll used in the present invention can be provided with a concave-convex shape having a recess depth of 0.01 to 1 mm depending on the type of design to be transferred.
By forming such a concave or convex shape having a depth or thickness, the thickness of the transferred coating film can be made more uniform as compared with the case where a conventional transfer roll is used, and a high-definition design A coating film having a property can be obtained.

It is preferable that the concavo-convex shape for imparting a design formed on the plate material of the transfer roll used in the present invention is formed so that the depth of the concave portion becomes 0.01 mm or more by ultraviolet rays or a laser beam. On the surface of the plate material of the transfer roll, a concave and convex shape for imparting design properties by ultraviolet rays or a laser beam is uniformly and accurately formed with a concave depth of 0.01 mm.
Since it can be formed as described above, it becomes possible to hold the paint only in a necessary amount on the surface of the transfer roll, and as a result, it is possible to transfer a coating film having a design to the substrate with high precision .

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below. First, an outline of a gradation reproduction type coating system according to the present invention will be described. As shown in FIG. 1, the coating system according to the present invention substantially creates an image database 1 for storing (storing) various image data and film original data (color plate data) using the image data. An image setter 2 comprising a film manuscript preparing device 2, an image controller 4 and an automatic developing machine 5, which automatically prepares (develops) the film 7 based on the film manuscript data inputted from the film manuscript preparing device 2;
Plate making device 6 for producing plate material 21 by using
And a roll coater 8 for applying a coating to the base material. The image controller 4 performs various controls of the automatic developing machine 5.

In this coating system, when applying a coating to a base material, first, image data of various original gray-scale images stored in the image database 1 and having a design characteristic expressed in halftones by gray-scale. Desired image data is selected from among them. Next, the selected image data is input to the film original creation device 2. The film manuscript making device 2 has various image processing functions, for example, a binarization processing function,
A computer system having a gradation tone correction processing function and the like. In this film original creation device 2, data conversion processing, color separation / image division processing, finish size adjustment processing, etc. are performed on input image data. Is performed to create film original data (color plate data).

Further, in the film manuscript making apparatus 2, density gradation division processing (gradation compression conversion) is performed on the film manuscript data to form gradation density stepwise divided image data. Based on the gradation stepwise divided image data, divided reproduction original figure data is created for each gradation density. The film manuscript data or the reproduction original drawing data is stored (saved) on the disk 3 when necessary.

Then, each divided reproduction original drawing data created for each gradation density is input to the automatic developing machine 5 via the image controller 4. In the automatic developing machine 5, a film 7 (a negative film or a positive film) having an image corresponding to each divided reproduction original is created based on the divided reproduction original drawing data.

Next, in the plate making apparatus 6, a plate material 21 having an uneven shape corresponding to an image displayed on the film 7 (ie, an original divided reproduction image) is produced using each film 7. That is, in this coating system, when performing one coating, a plurality of types of films 7 are created in accordance with the number of gradation divisions, and a plate 21 is created for each of these films 7. Specifically, for example, the film 7 is arranged on the surface of a rubber plate 21 and thereafter the film 7 or the plate 21
Is irradiated with ultraviolet light for a predetermined time. Here, in the transparent portion of the film 7, the ultraviolet rays pass through the film 7 and reach the plate 21, thereby curing the plate 21. On the other hand, in the opaque portion (black portion) of the film 7, since the ultraviolet rays are absorbed by the film 7, the ultraviolet light does not reach the plate 21, so that the plate 21 remains uncured. Thus, a convex portion is formed in a portion of the plate material 21 in contact with the transparent portion of the film 7, and a concave portion is formed in a portion of the plate material 7 in contact with the opaque portion. In this way, an image displayed on the film 7, that is, an uneven shape corresponding to the divided original drawing is formed on the plate 21.

Instead of such a plate making method, a laser engraving plate making method using a laser beam (for example, a CO ₂ laser) may be used. In this laser engraving method, when a rubber or sponge is irradiated with a laser beam,
Utilizing the property that the rubber or sponge is melted / decomposed or cut off. In the case of using such a laser engraving method, a plate 21 having an uneven shape is manufactured by the following process. That is, using a laser device capable of irradiating a laser beam to an arbitrary position of the plate 21, the laser is irradiated only to a portion of the plate 21 where a concave portion is to be formed. Here, the laser device scans the surface of the plate 21 and emits a laser beam (on) if the aiming position of the laser during the scanning is a position where a concave portion should be formed in the plate 21. Lumber 2
This part of 1 is removed by melting, decomposing or shaving the rubber or sponge. On the other hand, if the aiming position of the laser device is a position where a projection is to be formed on the plate 21, the emission of the laser beam is stopped (off), and at this time, the rubber or sponge at this portion of the plate 21 remains. Thus, plate 2
On the surface of No. 1, an uneven shape corresponding to the tone reproduction image is formed. Here, the laser device scans based on the tone reproduction image data directly input from the computer, or scans based on the read image information while reading the tone reproduction image (print, positive film, etc.). Therefore, in this case, it is not necessary to prepare the film 7 (filmless).

Further, in addition to the above plate making methods, a plate making method using the following laser beam (for example, a YAG laser beam) and ultraviolet light may be used. In the case of using this plate making method, the plate material 21 having an uneven shape is manufactured by the following procedure. In this case, it is preferable to use a photosensitive resin (photopolymer) as the plate material. In this plate making method, a laser-sensitive thin black mask is arranged on the plate 21. Then, using a laser device capable of irradiating a laser beam to an arbitrary position of the black mask on the plate 21, the black mask is irradiated with the laser only at the position corresponding to the portion where the projection of the plate 21 is to be formed. I do. Here, the laser device scans the surface of the black mask on the plate material 21 and emits a laser beam if the aiming position of the laser device during the scan is a position where a projection is to be formed on the plate material 21 ( ON), at this time, this part of the black mask is melted / removed or made transparent. On the other hand, the aiming position of the laser device is
If the position where the concave portion is to be formed in the plate material 21, the emission of the laser beam is stopped (off), and at this time, this portion of the black mask on the plate material 21 remains black. Here, the laser device scans based on the tone reproduction image data directly input from the computer, or scans based on the read image information while reading the tone reproduction image (print, positive film, etc.). Therefore, also in this case, the production of the film 7 is not required (filmless). Next, the plate 21 is irradiated with ultraviolet rays from the black mask side. In this case, the plate material 21 is hardened by ultraviolet rays in a portion where the black mask is melted, removed, or made transparent, and this portion becomes a convex portion. On the other hand, in the portion where the black mask remains, since the ultraviolet light is absorbed by the black mask, the plate 21 remains uncured, and this portion becomes a concave portion. Thus, an uneven shape corresponding to the tone reproduction image is formed on the surface of the plate 21.

Then, in the roll coater 8, one plate is repeatedly coated with these plate members 21 in order, and a coating film having a design property corresponding to the original light and shade image is formed on the surface of the substrate. Is done. The roll coater 8 includes a mesh roll 11 having a plurality of grooves formed on a peripheral surface thereof in a mesh shape, and holding a paint supplied from a paint supply source at a predetermined thickness on the peripheral surface by the grooves. The plate 2 on the surface
1 is provided with a transfer roll 12 wound therewith. Then, the roll coater 8 contacts the transfer roll 12 with the mesh roll 11 to cause the paint held on the peripheral surface of the mesh roll 11 to adhere to the circumferential surface of the transfer roll 12;
Further, the paint adhering to the circumferential surface is transferred to a substrate as a coating film having a design property corresponding to the original light and shade image.

In the following, the density gradation division processing by the film original preparation device 2 and the coating processing by the roll coater 8 in this coating system will be described in more detail. First, the density gradation division processing performed by the film original creation device 2 will be described. In this film original creation device 2, a plurality of original reproduction figures are created by dividing a grayscale original image into density gradations by a density gradation division process based on a color gamut separation method or a repainting method. In addition, a film 7 is created for each of the divided reproduction original drawings, a plate 21 is manufactured for each of the films 7, and one substrate is repeatedly coated using these plate 21. Is as described above.

Here, the density gradation division is one of the methods for expressing a shade (halftone) or a color tone (multicolor) in painting or the like using the roll coater 8, and includes a plurality of plate materials 21 (multicolor). A color plate) is used to express light and shade or a color tone according to the composition of the coating color. In this case, each printing plate material 21 used for one coating is a solid printing plate (a binarization process such as a full-screen plain shading process using a halftone dot may be further performed if necessary). The method does not perform halftone dot decomposition such as the tone reproduction method that expresses shading using the density of halftone dots, so that there is no density change due to dot gain, and high tone reproducibility especially near highlights. There is.

FIG. 2 schematically shows a gray scale expression by the density gradation division method. In FIG. 2, the left-side diagram shows the original gray-scale image, and the right-side diagram shows an enlarged gray-scale reproduction image obtained by processing a part of the gray-scale original image by the gray-scale division method. I have. In the density gradation division process by the color gamut separation method, the grayscale original image is converted into a gradation density stepwise divided image composed of a plurality of density gradation regions each represented by a gradation gradation that changes stepwise. Tone compression conversion, and for each density gradation area,
A divided reproduction original drawing expressing the shape of the density gradation area is created. That is, a divided reproduction original drawing corresponding to the shape of each density gradation area is created. Therefore, according to this approach,
Since there is no overlap of the coating film on the base material during painting,
Simply use the paint of the intended density or color.

For example, the grayscale original image shown in FIG. 3 is divided into first to fourth density gradations in which the density is sequentially increased (the number of divisions is 4), and density gradation division processing using a color gamut separation method is performed. FIGS. 5 to 8 respectively show the first to fourth divided reproduction original images obtained by the application. It should be noted that a tone reproduction image as shown in FIG. 4 is obtained by superimposing the respective divided reproduction original drawings shown in FIGS. Therefore, when the base material is coated with the roll coater 8 using the four types of plate materials 21 manufactured by the density gradation division process using the color gamut separation method, the coating substantially as shown in FIG. An image will be obtained. As is clear from FIG. 4, in the tone reproduction image obtained by the color gamut separation method, good tone reproducibility is obtained.

Further, in the density gradation division processing by the over-painting method, the original gray-scale image is firstly changed in steps.
After gradation compression conversion into a gradation density stepwise divided image composed of n density gradation areas expressed by the nth (n is an integer greater than or equal to) integer gradation gradation image, first, a gradation density stepwise division image A first divided reproduction original drawing expressing the shape of the entire density gradation area is created. Then, the second, third,... Divisions expressing the density gradation area formed by sequentially removing the first to (n−1) th density gradation areas from the entire density gradation area are performed. Create a reproduction original. In this case, for example, the shape displayed in the second divided reproduction original is included in the shape displayed in the first divided reproduction original, and the shape displayed in the third divided reproduction original is displayed in the second divided reproduction original. The relationship of being included in the shape is sequentially repeated. Therefore, according to this method, at the time of coating, a coating film is applied over the base material to express a shade or color by the overlap of the coating film. Must be selected as intended. The coating system based on the recoating method has an advantage that no misregistration occurs even when the position of each plate material shifts when the substrate is repeatedly coated using each plate material.

The original gray-scale image shown in FIG. 3 is divided into first to fourth gray-scale levels (n = 4) in which the density is sequentially increased, and a density gray-scale division process is performed using a coating method. The first to fourth divided reproduction original images obtained by the above are shown in FIGS. 10 to 13, respectively. It should be noted that when the original divided reproduction drawings shown in FIGS. 10 to 13 are superimposed, a gradation reproduction image as shown in FIG. 9 is obtained. Therefore, when the base material is coated with the roll coater 8 using the four types of plate materials 21 manufactured by the density gradation division process using the re-coating method, a coated image almost as shown in FIG. 9 is obtained. Will be obtained. As is clear from FIG. 9, good tone reproducibility is obtained even in the tone reproduction image obtained by the coating method.

Hereinafter, the coating process by the roll coater 8 will be described. First, the outline of the coating process will be described. FIG. 18 is a perspective view of a base material B to which an appearance similar to a stack of bricks is applied. As shown in FIG.
The base material B has a brick portion 36 in which a convex portion of a base material 35 having an uneven surface is coated with a coating exhibiting a brick-like appearance, and a concave portion has a joint-like appearance of each brick portion 36. A joint portion 37 to which painting is applied is formed. Further, on the surface of the brick portion 36, there is formed a design portion 38 (design portion, pattern portion) to which a paint having a design property for expressing a realistic appearance as a brick is applied.

The base material B shown in FIG. 18 is generally coated by a procedure shown in FIG. 19, for example.
That is, as shown in FIG. 19, in this coating,
First, a base material 35 is prepared (step S1), and a paint of a first color of a color (for example, gray) corresponding to the joint portion 37 is applied to the entire surface of the base material 35 by a spray coating machine or the like. To form the first coating film 40 (step S2). Next, the first coating film 40 is dried using a continuous drying furnace or the like (Step S3).

Subsequently, a roll coater 8 provided with a transfer roll having a smooth circumferential surface (cylindrical surface) (see FIG. 14).
The brick portion 36 is formed on the surface of the convex portion of the base material 35 by using
The second color paint (for example, brown) corresponding to the second color is applied to form a second coating film 41 (step S4). Next, similarly to the case of drying the first coating film 40, the second coating film 41 is dried using a continuous drying furnace or the like (Step S).
5). Thus, on the surface of the base material 35, the brick portion 36
And joints 37 are formed (see FIG. 18).

Further, in order to enhance the design of the base material B,
A third color paint corresponding to the design portion 38, which expresses an aggregate or a mixture having different hues, is provided with a convex portion (brick portion 36).
Is applied to a predetermined portion to form a third coating film 42 (step S6). The third coating film 42 is applied by applying a coating material on the surface of the brick portion 36 using a roll coater provided with a transfer roll having irregularities of a predetermined shape on the circumferential surface. Thereafter, the third coating film 42 is dried using a continuous drying furnace or the like (Step S7). Here, steps S6 and S7 are repeated by the number of divisions of the density gradation, that is, by the number of plate materials used for this coating. Thus, the base material B as shown in FIG. 18 is obtained.
As shown by the broken line, the coating may be performed by repeating step S6 for the number of divisions of the density gradation, and thereafter, drying may be performed only once in step S7. In this way, continuous application of a coating film having a desired design can be performed by selectively using the coating apparatus and repeatedly applying the coating material.

Hereinafter, the specific structure and function of the roll coater 8 will be described. In this embodiment, in the base material on which the first coating film and the second coating film are applied, a coating film having a design property is applied on the second coating film. The present invention is not limited to such a form, and naturally includes other forms, for example, a form in which a coating film having a design property is applied on the first coating film.

FIG. 14 is a cross-sectional elevational view schematically showing a roll coater 8 according to the present invention for applying a decorative coating film 42 (third coating film) to a substrate B having an uneven surface. It is. In addition, the base material B shown in FIG.
And a wall material or the like, which is a ceramic-related construction material having an uneven surface, which has been painted so as to have the appearance of stacked bricks. Then, on the base material B, for example, through steps S1 to S5 of a coating process as shown in FIG. 19, a first coating film 40 for forming the joint portion 37 and a first coating film for forming the brick portion 36 are formed. The two coatings 41 have already been painted.

In the paint used herein, the vehicle varnish may be vinyl acetate / vinyl acetate ethylene,
It is possible to use those commonly used in paints such as vinyl acetate / vinyl acrylate, vinyl acetate / vinyl flopionate, styrene / butadiene, copolymers composed of acrylic acid monomers, and inorganic polymers such as homopolymers. it can. As the pigment, it is preferable to use titanium oxide for the base color. As the extender, it is preferable to use sedimentable calcium carbonate, barium sulfate, talc, clay, white carbon, or the like in order to improve the mechanical properties of the coating film. The ratio of the base color pigment to the extender is 100 /
By setting the value in the range of 0 to 0.1 / 99.9, the hiding power can be adjusted to a desired value, and the design of contrast and shade gradation can be imparted. Various color pigments can also be used to adjust the color tone. For example, zinc white, graphite, yellow iron oxide, hawker, titanium yellow, Haizan yellow, permanent yellow, molybdenum orange, hosta palm orange, red bengara,
Rake red, purple bengara, quinacridone violet, navy blue, ultramarine, copper phthalocyanine, chrome green,
Inorganic or organic coloring pigments such as brominated copper phthalocyanine, carbon black, iron black and the like can be used. The ratio of the varnish, the base color pigment, the extender pigment, and the color pigment is appropriately determined depending on the content and color tone of the resulting design. Furthermore, in order to adjust properties such as viscosity of the paint, a drying accelerator, a pigment dispersibility improver for a surfactant, a thickener such as carboxymethyl cellulose, colloidal silica, castor oil, a thixotropic agent, an anti-sagging agent, and a silicone. Oils, leveling agents such as polyether polyacrylate copolymers, defoamers, anti-repellents, and other additives can be added.

As shown in FIG. 14, the substrate B is transported in the direction of arrow Y by a transport mechanism (not shown). Then, the roll coater 8, the mesh roll 11 rotating in the arrow X ₁ direction, and the transfer roller 12 which rotates in direction of arrow X _2, the cleaning roller 13 rotates in the arrow X ₃ direction, rotates in the arrow X ₄ direction A cleaning roll 14 is provided. In addition, the cleaning roll 1
Reference numeral 4 moves in the directions of the double-headed arrows Z _{1 and} Z ₂ so as to be able to abut or press against the transfer roll 12 or separate therefrom.

The mesh roll 11 is for supplying a paint of a predetermined thickness to the transfer roll 12, and is brought into contact with the transfer roll 12 at a desired pressure. The paint is supplied to the mesh roll 11 from a paint supply source (not shown) such as a paint tank. A doctor blade 17 is arranged at a predetermined distance from the peripheral surface of the mesh roll 11. The doctor blade 17 holds the paint on the mesh roll 11 and supplies the paint onto the mesh roll 11 with a film thickness (for example, about 250 μm) corresponding to the distance between the mesh roll 11 and the doctor blade 17. Has become. In addition, below the mesh roll 11, an open-type paint container 18 (pan) that receives and stores paint falling from the mesh roll 11 is arranged.

As shown in FIG. 16, a cylindrical mesh roll 11 is coaxially mounted on a rotating shaft 15 and a plurality of mesh-shaped grooves 16 (for example,
Lattice type grooves having a depth of about 30 to 400 μm are formed. The mesh-shaped groove portion 16 ensures that the paint is held at an appropriate thickness on the peripheral surface, and also prevents the paint from being biased by the centrifugal force caused by the rotation of the mesh roll 11 and the dripping of the paint. Has a function.

The transfer roll 12 is arranged so as to be able to contact the surface of the substrate B. Then, in the transfer roll 12, as shown in FIG.
A structure in which a rubber plate 21 is wound around the outer periphery of a cylindrical shaft body 20 made of metal such as aluminum so that the transfer roller 1 can contact the transfer roll 12 with a desired pressure, or a shaft. It has a structure in which a rubber plate 21 is attached to a body 20. Note that the transfer roll 12 is coaxially attached to a shaft 19. And the plate material 21
A plurality of convex portions 22 are formed on the outer surface portion of the device, and minute concave portions 23 are formed in each convex portion 22.

As described above, the surface of the plate material 21 of the transfer roll 12 has irregularities (patterns representing aggregates, lumps of a mixture of different hues, etc.) imparting a desired design property, or ultraviolet rays or Using a laser beam, it is formed to a thickness or depth of, for example, 0.01 mm or more, more preferably 0.05 to 2 mm. If you use ultraviolet light or laser light,
The plate material 21 can be formed with a concavo-convex shape imparting a design property with a uniform thickness or depth and with a clear contour. As a material of the printing plate 21 suitable for processing by such ultraviolet light or laser beam, for example, butadiene /
Partially crosslinked copolymer of methacrylic acid / divinylbenzene / methyl methacrylate, styrene / isoprene / styrene copolymer, maleic acid monoester-modified isoprene polymer, N, N-diethylaminopropyl methacrylamide, lauryl methacrylate and 2- Water-developable rubber molded product made of ethylene anthraquinone (for example, trade name “Flexid D-123”, hardness after curing JIS A4
0 °, 3.1 mm: manufactured by Nippon Paint Co., Ltd., a solvent-developed rubber molded product containing styrene / isoprene / styrene copolymer as a main component (for example, trade name “Sirel TDR”, “Sirel DPS flexo plate”): Du Pont Company-made).

A silver salt film having a pattern (gradation), shape, or combination thereof capable of imparting a design property is brought into vacuum contact with these rubber molded articles, and after irradiating them with ultraviolet rays, or by laser. After direct writing and photopolymerization, a non-exposed portion is developed and dried using water, perchlorethylene, or the like, whereby a rubber molded body (plate material 21) having a concavo-convex shape imparting design properties is obtained. .
In order to obtain a rubber molded body (plate material 21) having a concavo-convex shape that imparts design properties by ultraviolet light or laser, a design pattern, shape,
It is also effective to convert the combination into an electrical signal corresponding to the combination to form an uneven shape on the plate 21. In addition, a rubber molded article for acrylic liquid casting (trade name "APR": manufactured by Asahi Kasei Corporation) can also be used.

As shown in FIG. 17 (b), a transfer roll 12 'having a foam layer 24 interposed between a cylindrical metal shaft 20 and a plate 21 may be used. By providing the foam layer 24 in this way, it is possible to efficiently transfer a paint film having a design to a substrate such as a wall material that is not smooth due to the elasticity of the foam layer 24. Becomes The foam layer 24 may be made of any material as long as it has high resilience and elasticity with little residual stress.
５００500 kg / m ³ (preferably 100-300 kg
/ M ³ ), but a material having a skin surface is preferable from the viewpoint of adhesiveness. The thickness of the foam layer 24 can be set to a desired value in consideration of circumstances such as whether the base material is a smooth surface or an uneven surface, but is usually 1 to 30 mm, and is preferably 1 to 30 mm. 5 to 20 mm. Note that an adhesive layer or a tape may be provided between each of the layers constituting the transfer roll 2 ′ to prevent a shift between the layers. Also,
As shown in FIG. 17C, a transfer roll 1 in which a sponge roll 25 is externally fitted on the outer periphery of a cylindrical metal shaft body 20.
2 ". In this case, the sponge roll 25 may be used.
A convex portion 26 and a minute concave portion 27 for forming a design portion are formed on the outer peripheral portion of. Further, a sleeve made of glass reinforced plastic or the like may be mounted on the shaft body 20, and the above-described structure may be mounted on the sleeve.

Again, as shown in FIG. 14, the cleaning roll 13 is
Paint on the surface of the transfer roll 12
Cleaning of the surface of. The cleaning roll 13 is preferably provided with a doctor blade 28 for scraping the paint on the cleaning roll 13 and an open paint receiver 29 (pan), but these may be omitted.

[0052] As apparent from FIG. 14, the cleaning roll 13, as viewed in the transfer roll rotation direction (direction of arrow X _2), the trailing side of the transfer position where the rubber transfer roll 12 contacts the substrate B of (rear) It is arranged at a predetermined position. The cleaning roll 13 is pressed against the surface of the rubber transfer roll 12 in order to collect the paint adhering to the surface of the rubber transfer roll 12 that has passed the transfer position. In the cleaning roll 13, the paint transferred from the transfer roll 12 to the cleaning roll 13 is scraped off by the doctor blade 28 and stored in the paint receiver 29. Here, the paint accumulated in the paint receiver 29 is appropriately returned to a paint tank or the like (not shown). If a cleaning roll is mounted in place of the doctor blade 28 and a cleaning solvent is put in the paint receiver 29, the paint adhered to the cleaning roll 13 is washed by the cleaning solvent and Be captured.

As described above, the coating film 4 having a design property is applied to the base material B.
Since the paint remaining on the transfer roll 12 after coating 2 is collected by the cleaning roll 13, the surface of the transfer roll 12 can be kept in a state in which no excess paint remains, and the The coating material supplied to the transfer roll 12 can be maintained at an appropriate film thickness with respect to the base material B. For this reason, basically, it is possible to perform coating to some extent or quite stable.

However, with such a cleaning roll 13 alone, when the viscosity of the paint supplied to the circumferential surface (surface) of the transfer roll 12 is high, or when the paint adhered to the circumferential surface of the transfer roll 12 When is cured, the paint adhering to the transfer roll 12 may not be sufficiently removed. In such a case, if the transfer of a fine decorative pattern or the like is to be performed, the paint may be clogged in the concave portion 23 which is a dug portion of the pattern of the transfer roll 12, and the like.
The outline of the decorative pattern may be lost. In addition, when it is desired to increase the thickness of the coating or to apply the coating to a substrate having considerable irregularities, it is necessary to considerably increase the transfer pressure of the transfer roll 12, but in that case, the transfer pressure is excessively increased. In such a case, the paint may accumulate in the concave portion 23 of the transfer roll 12 and the above-mentioned problem may be remarkable.

Therefore, the roll coater 8 is in contact with the circumferential surface of the transfer roll 12 (plate material 21), and is used for cleaning the paint adhered to the concave portion 23 of the circumferential surface of the transfer roll 12. A roll 14 is provided. The cleaning roll 14, as viewed in the transfer roll rotation direction (direction of arrow X _2), a trailing side of the cleaning roll 13 (the rear side), and a predetermined position of the leading side of the mesh roll 11 (front) Are located. Note that the cleaning roll 14 may be arranged on the leading side (front side) of the cleaning roll 13.

[0056] The cleaning roll 14, a cylindrical body 30 rotates in the arrow X ₄ direction, and the brush 31 in contact or pressure contact with the circumferential surface of the mounted on the circumference of the circular cylindrical body 30 transfer roll 12 Is provided. Here, the brush 31
Is, for example, a plastic brush using nylon or the like,
Or an animal brush using pig hair or the like. Then, the brush 31 comes into contact with the circumferential surface of the transfer roll 12, and effectively removes the paint that has accumulated or adhered to the concave portion 23 of the transfer roll. Further, slightly below the cleaning roll 14, water as a solvent for the paint,
An open pan 32 (pan) containing an organic solvent or the like is provided. A part of the brush 31 is immersed in the parent solvent in the pan 32,
No. 1 can effectively remove the paint in the concave portion 23 by the action of the lipophilic solvent. It should be noted that a solvent removing device for wiping off the parent solvent adhering to the circumferential surface of the transfer roll 12 may be provided on the trailing side (rear side) of the cleaning roll 14 as viewed in the rotation direction of the transfer roll 12. .

The cleaning roll 14 can move in the directions of the double-headed arrows Z _{1 and} Z ₂ . Therefore, the cleaning of the concave portion 23 on the circumferential surface of the transfer roll 12 can be performed as needed, so that unnecessary cleaning can be avoided. Further, the cleaning roll 14 is
By using a roll of a metal or plastic that can be pressed together, it is possible to increase the paint collection efficiency.

The cleaning roll 14 is basically made of any material that can remove the paint accumulated in the concave portion 23 of the circumferential surface of the transfer roll 12 by sucking or scraping. Can be used. For example, a plastic brush using nylon or the like or an animal brush using pig hair or the like attached to the roll surface can be used. In addition, foams such as CR, NBR and urethane, and sponge rolls having a water absorbing property or an oil absorbing property such as a PVA foam can also be used. The hardness is preferably JISC 10 ° to 80 °, the thickness is preferably 1 to 30 mm, and the brush is preferably used. It is also possible to combine rolls and form rolls, or to arrange a plurality of these rolls.

Further, instead of the cleaning roll 14 substantially composed of the cylindrical body 30 and the brush 31 as shown in FIG. 14, urethane foam and PVA as shown in FIG.
A cleaning roll 14 ′ having a water absorbing or oil absorbing foam roll 33 (or a sponge roll) made of a foam or the like is provided so as to absorb the paint accumulated in the concave portion 23 of the circumferential surface of the transfer roll 12. Is also good. In this case, in order to squeeze the paint held by the foam roll 33 and drop the paint onto the pan 32, it is preferable to install a metal or plastic pressure roller 34 that is pressed against the foam roller 33.

Thus, in the roll coater 8,
Since the paint adhered or deposited on the concave portion 23 of the plate material 21 of the transfer roll 12 is effectively removed (collected) by the cleaning roll 14, the paint is transferred to a portion other than the design portion on the base material B. There is no problem such as that Also,
Problems such as solidification of the paint on the circumferential surface of the transfer roll 12 to increase the hardness of the circumferential surface and clogging of the concave portion 23 of the circumferential surface do not occur. For this reason, the high-definition coating film 42 having high designability can be easily and inexpensively applied to the base material B. That is, a high-definition design can be formed on the base material B, and it is not necessary to temporarily stop the process and wash the transfer roll 12,
Production efficiency is increased.

[Brief description of the drawings]

FIG. 1 is a schematic view of a coating system according to the present invention.

FIG. 2 is a photograph of a halftone image displayed on a display, schematically showing a tone reproduction characteristic by a density tone division method.

FIG. 3 is a photograph of a halftone image displayed on a display, showing a grayscale original image used for tone reproduction.

FIG. 4 is a photograph of a halftone image reproduced on a tone by a color gamut separation method from a grayscale original image shown in FIG. 3 and displayed on a display.

FIG. 5 is a photograph of a halftone image displayed on a display of a first divided reproduction original image created by gradation reproduction from the grayscale original image shown in FIG. 3 by a color gamut separation method (number of divisions: 4). is there.

FIG. 6 is a photograph of a halftone image displayed on a display of a second divided reproduction original image created by gradation reproduction from the grayscale original image shown in FIG. 3 by the color gamut separation method (the number of divisions is 4). is there.

7 is a photograph of a halftone image displayed on a display of a third divided reproduction original image created by performing gradation reproduction from the grayscale original image shown in FIG. 3 by a color gamut separation method (number of divisions: 4). is there.

FIG. 8 is a photograph of a halftone image displayed on a display of a fourth divided reproduction original image created by performing gradation reproduction from the grayscale original image shown in FIG. 3 by a color gamut separation method (number of divisions: 4). is there.

FIG. 9 is a photograph of a halftone image displayed on a display after tone reproduction from the grayscale original image shown in FIG. 3 by a repainting method.

10 is a photograph of a halftone image displayed on a display of a first divided reproduction original image created by performing gradation reproduction from the grayscale original image shown in FIG. 3 by a repainting method (number of divisions: 4).

11 is a photograph of a halftone image displayed on a display of a second divided reproduction original image created by performing gradation reproduction from the grayscale original image shown in FIG. 3 by a repainting method (the number of divisions is 4).

12 is a photograph of a halftone image displayed on a display of a third divided reproduction original image created by performing gradation reproduction from the grayscale original image shown in FIG. 3 by a repainting method (the number of divisions is 4).

FIG. 13 is a photograph of a halftone image displayed on a display of a fourth divided reproduction original image created by performing gradation reproduction from the grayscale original image shown in FIG. 3 by a repainting method (the number of divisions is 4).

FIG. 14 is a schematic view schematically showing an elevational cross-sectional structure of a roll coater used in the coating system according to the present invention.

FIG. 15 is a schematic view schematically showing an elevational cross-sectional structure of a modified example of the roll coater shown in FIG.

FIG. 16 is an external perspective view of a mesh roll used in the roll coater shown in FIG. 14 or FIG.

17A is an external perspective view in which a part of a transfer roll used in the roll coater shown in FIG. 14 or 15 is broken, and FIGS. 17B and 17C are modified examples of the transfer roll, respectively. It is the external appearance perspective view which the part shown was broken.

FIG. 18 is a perspective view of a ceramic-related construction material coated with a brick-like appearance.

FIG. 19 is a flowchart showing a coating process of a ceramic and metal sizing related base material.

[Explanation of symbols]

B: base material, 1: image database, 2: film manuscript making device, 3: disk, 4: image controller, 5
... automatic developing machine, 6 ... plate making device, 7 ... film, 8 ... roll coater, 11 ... mesh roll, 12 ... transfer roll, 12 '... transfer roll (modification), 12 "... transfer roll (modification), 13 ... cleaning roll, 14 ... cleaning roll, 14 '... cleaning roll (modification), 15 ... rotating shaft, 16 ... groove, 17 ... doctor blade, 18 ... paint container (pan), 19 ... shaft, 20 ... shaft Body, 21 ...
Plate material, 22: convex portion, 23: concave portion, 24: foam layer, 25
... sponge roll, 26 ... convex part, 27 ... concave part, 28 ... doctor blade, 29 ... paint receiver (pan), 30 ... cylindrical body, 31 ... brush, 32 ... pan, 33 ... foam roll, 34 ... pressing roll, 35 ... base material, 36 ... brick part, 37 ... joint part, 38 ... design part, 40 ... first coating film, 4
1: 2nd coating film, 42: 3rd coating film.

Claims (12)

[Claims] 1. A gradation density step comprising a plurality of density gradation areas, each of which is represented by a gradation gradation that varies step by step, from a gradation original image having a design characteristic represented by continuous halftones by gradation. A tone reproduction device for performing gradation compression conversion to a target divided image, and a divided reproduction for creating, for each density gradation region of the gradation gradation step-divided image, a divided reproduction original image expressing the shape of the density gradation region An original drawing creating apparatus; a plate making apparatus for forming a concave / convex shape corresponding to the divided original drawing on the surface of each transfer roll for each divided original drawing created by the divided original drawing creating apparatus; The groove portion is formed in a mesh shape, while a mesh roll that holds a paint supplied from a paint supply source at a predetermined film thickness on the peripheral surface by the groove portion is provided, while the transfer roll is mounted, and the transfer roll is Mesh roll A roll coater for transferring the paint held on the peripheral surface of the mesh roll to the circumferential surface of the transfer roll by contacting the paint roll and transferring the paint adhered to the circumferential surface to the base material is provided. The above-mentioned roll coater is applied to the same substrate repeatedly using a paint having a predetermined color tone which is different for each transfer roll, and is applied separately on the same substrate. A tone reproduction type coating system characterized by forming a coating film having the following. 2. A density original image having a design characteristic expressed in a continuous halftone by density is converted into n number of density gradations represented by first to nth density gradations which change stepwise, respectively. A tone reproduction device for performing gradation compression conversion to a gradation density stepwise divided image composed of regions, a divided reproduction original drawing for expressing the shape of all density gradation regions of the gradation density stepwise divided image, Divided reproduction for creating (n-1) density gradation areas formed by sequentially removing the first to (n-1) th density gradation areas from the tone area An original drawing creating apparatus; a plate making apparatus for forming a concave / convex shape corresponding to the divided original drawing on the surface of each transfer roll for each divided original drawing created by the divided original drawing creating apparatus; Groove is formed in a mesh shape, and from the paint supply source A mesh roll that holds the supplied paint at a predetermined film thickness on the peripheral surface by the groove portion is provided, while the transfer roll is mounted, and the transfer roll is brought into contact with the mesh roll to provide a peripheral surface of the mesh roll. A roll coater for attaching the held paint to the circumferential surface of the transfer roll and transferring the paint attached to the circumferential surface to the base material is provided, and the roll coater is provided for each transfer roll. A tone reproduction type coating, characterized in that paints of different predetermined colors are applied over the same base material to form a coating film having a design property corresponding to the original light and shade image on the base material. system. 3. The roll coater is arranged such that its outer peripheral surface is in pressure contact with the circumferential surface of the transfer roll, and collects paint remaining on the circumferential surface of the transfer roll after passing the transfer position. A cleaning roll that cleans the circumferential surface of the transfer roll, and a cleaning roll that contacts the circumferential surface of the transfer roll and cleans the paint adhered to the concave portion of the circumferential surface of the transfer roll. 2. The method according to claim 1, wherein
Or the gradation reproduction type coating system described in 2. 4. The transfer roll according to claim 1, wherein the transfer roll comprises a cylindrical hard shaft and a rubber plate wound around the shaft. The gradation reproduction type coating system described in one. 5. The gradation reproducing type coating system according to claim 1, wherein said transfer roll is a cylindrical body made of sponge. 6. The roll coater according to claim 1, wherein a paint containing titanium oxide according to the design and a white base paint having a different extender pigment ratio is used. The gradation reproduction type coating system described in one. 7. The gradation reproduction type coating system according to claim 6, wherein the paint contains a toning color pigment. 8. The gradation reproduction type coating system according to claim 7, wherein the coating material contains a flow control agent. 9. The gradation reproduction type coating system according to claim 8, wherein the paint contains an aggregate. 10. The gradation reproduction type coating system according to claim 6, wherein said coating material is an emulsion type coating material. 11. A dry film thickness of 1 using the gradation reproduction type coating system according to any one of claims 1 to 10.
A coating method characterized by coating a base material with a coating film having a design property of 0 μm or more. 12. A coating material having a dry film thickness of 10 μm or more, wherein a coating film is applied on a substrate using the gradation reproduction type coating system according to claim 1. .